Random breast swelling 10 years post implants. Advice?

I'm experiencing swelling of both breasts. 1 week before my period (I am on the pill) and lasts for 3-5 days. The swelling can occur in both Slight amount of pain, feels like the muscles are very tight. Pain comes from under my arms and the inner side. No nipple changes I have been to 3 drs but get referred to plastic surgeon. An MRI showed the implants are intact and look ok. The 2 plastic surgeons in town are hard to get into. Implants are 10 years old, teardrop, silicon & under the muscle